Signal.



No. 858,064. PATENTED JUNE 25. 1907.

- H. w, EDEN.

SIGNAL. APPLICATION FILED FEB. 5, 1996.

mum's-$112M 1.

WITIYESSES i 56 f V a y PATENTED JUNE 25, 190v.

"H. W. EDEN.

SIGNAL. APPLICATION-FILED rm. s, 1996.

2 slums-sum 2 [kl/anion M24 M MKMMM a.

UNITED STATES FATENT OFFICE.

HAROLD W. EDEN, OF DETROIT, MICHIGAN, ASSIGN OR TO P. R. MANU- FACTURING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

SIGNAL.

Specification of Letters Patent.

Patented June 25, 1907.

1'0 ctZZ whom 732? may concern:

Be it known that I, HAROLD W. EDEN, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Signals; and I declare the following to be a full, clear, and eXact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to signals; it has for its object improvements in the general construction of a magnetic actuated bell.

In the drawings :Figure 1, is a plan view. Fig. 2, is an elevation of the end of the magnet with the armature shown in dotted lines and with the armature support shown partly in section. Fig. 3, is a perspective. Fig. 4, shows a cover.

The base 1, upon which the magneto and armature are mounted is nearly rectangular in outline, and is provided with two brackets 2 and 3, and of these, the bracket 2 supports the armature, and the bracket 3 supports the magnet. The bracket 3, is of magnetic metal and serves as the path for the flow of magnetic flux as well as a support for the two spools 4 and 5, on which are wound the conducting wires; these are in electric connection with the binding posts 6 and 7. The binding posts are electrically insulated from the bracket 3, by which they are supported. The flow of the electric current is conducted across from one spool 4 to the other spool 5, through an interrupter, consisting of a vibrating tongue 8, that 1s secured to the face of the spool 1 and vibrates into and out of connection with a contact terminal 9 that is secured to the face of the spool 5. Both ends of each spool are protected by an insulating plate made as the one-half part of a long oval disk, and the two guards are located adja cent to each other at the ends of the two spools, and are brought into engagement along the meeting line 11, 12, and are secured together by ties 13, making the completed guard of the two spoolsat each end a substantially solid piece which serves as a firm support at the hammer end for the interrupter. The lnterrupter tongue 8 1s normally in engagement wlth the terminal 9 and is pushed out of engagement by an adjustable screw point 1 1, in the armature 15, and this action takes place upon the movement of the armature toward the spool. The armature is pivoted in the brackets 2 on point bearings, of which one point 16 is preferably of hardened steel engaging in a non-magnetic bushing 17, in the armature, and set permanently into the bracket. The opposite bearing is by means of an adjustable screw 18, held in the over-hanging split nut 19, of the bracket and engaging in a bushing 20 of nonmagnetic material in the armature. With this construction, there is no leakage of magnetic flux to be detected in the operation of the signal.

The armature is provided with a spring 21, against which the magnetic influence is eX- erted; this spring during periods of rest of the armature is not under tension, but upon the swinging of the armature in either direction is brought under tension to produce the quick return stroke of the armature and of the hammer at both limits'of its vibration.

The base and the magneto supported by it is protected by a cover 22, made in the form of a rectangular boX, which surrounds the base and bears against the foundation upon which the base is supported and is provided with a groove 23, which extends along the sides and across the end, in the groove is laid a strip of packing material to exclude dust. Where the cover crosses the base between the magneto and the bell, it is cut away and engages a locking piece 24 that is screwed to the base and engages over a projecting part of the cover, and thereby holds the cover tightly to the base. At the opposite end the edge of the cover rests on the base and is finally secured by a screw 25, (shown in dotted lines). The hammer handle of the bell projects through the opening 26.

What I claim is 1. In combination with a base for mounting magneto bells, and provided with an integral post for holding the magnet, and an integral post for holding the armature, a cover adapted to engage along the sides of the base and across the end thereof, the engaging edge of the cover being provided with a groove, packing material laid therein, and means for securing the cover and the base together,substantially as described.

2. In combination, a base for magneto bells, having cast integral therewith a magnet-supporting post, magnetic coils carried thereby, an armature-supporting post, an armature, means whereby the armature is pivotally supported upon one of said posts, binding posts rising from the other of said posts though insulated therefrom, said binding posts being electrically connected with the coils, and an interrupter whereby the flow of current from one coil to the other is regulated, its contact with that coil with which it is separably in connection being adapted to be broken by the displacing engagement thereagainst of a projecting part of said armature, substantially as described.

3. In combination with a base for magneto bells, a cover engaging closely therearound, its edge being grooved to permit the insertion of a dust excluding substance, an interlocking piece secured to the base and interlocking with the cover, substantially as described.

4. In combination with a base having integral brackets for supporting magnetic coils and an armature, magnetic coils, an armature, pivotal interconnecting means between said armature and its supporting bracket, binding posts supported by the post whereon the coils are mounted and insulated therefrom, and a resilient tongue in permanent electrical contact with one of said coils and normally engaging the other of said coils, the flow of current therethrough made possible by the continuance of its normal position being interrupted by the displacing engagement thereagainst of a projecting portion of said armature, substantially as de scribed.

In testimony whereof, I, sign this specification in the presence of two witnesses.

HAROLD WV. EDEN.

Witnesses:

MAY E. KoT'r, CHARLES F. BURTON. 

